Text to Encode:

URL to Decode:

Results:

What is URL Encoding?

URL encoding (also called percent encoding) converts special characters into a format that can be safely transmitted over the internet. Characters are replaced with a "%" followed by their hexadecimal representation.

Common Encodings

Character	Encoded	Reason
Space	%20	Reserved in URLs
&	%26	Query parameter separator
=	%3D	Parameter assignment
%	%25	Encoding character
+	%2B	Space in form data
?	%3F	Query string start

Examples

Encoding

"Hello World" → "Hello%20World"
"[email protected]" → "user%40example.com"
"price=$10.99" → "price%3D%2410.99"

Decoding

"Hello%20World" → "Hello World"
"user%40example.com" → "[email protected]"
"price%3D%2410.99" → "price=$10.99"

When to Use URL Encoding

Query parameters in URLs
Form data submission
API endpoints with special characters
File names in URLs
Any data transmitted in URLs

Important Notes

URL encoding is different from HTML encoding
Some characters don't need encoding in certain contexts
Double encoding can cause issues
Always decode on the receiving end

URL Encode / Decode